the condition of being sexy (used of men or boys): "sexy" used of guys variously means....

1. talented, gifted, smart, educated, confident
2. in military uniform so as to appear brave and protective of the 'gentler sex'
3. clever, swift, dashing, cunning
4. good-looking, attractive to females or gay guys
5. sexually desirable; beddable in the eye of gay men or boys
6. atheletic, well-built, of good physique, of being a "jock" or "stud"

David Parson was a sexy guy since he had a well-built, slender physique. He was the epitome of male sexiness.